Joseph Van Name's user avatar
Joseph Van Name's user avatar
Joseph Van Name's user avatar
Joseph Van Name
  • Member for 12 years
  • Last seen this week
  • Circassia
1 vote
0 answers
78 views

Positive semidefinite maximum principle

1 vote
0 answers
121 views

Matrix valued word embeddings for natural language processing

2 votes
0 answers
49 views

Counting permutations of $X^2$ that induce 4 quasigroup operations up to isotopy

1 vote
0 answers
42 views

Characterizing some similarity invariant homogeneous log-superharmonic functions of matrices

0 votes
0 answers
60 views

Is there a normal form for completely positive superoperators with rotationally symmetric spectra?

8 votes
2 answers
884 views

Large cardinal near inconsistencies

3 votes
0 answers
81 views

How many local maxima can $(x_1,\dots,x_r)\mapsto\|x_1A_1+\dots+x_rA_r\|_\infty/\|(x_1,\dots,x_r)\|_2$ have for Hermitian $A_1,\dots,A_r$?

0 votes
0 answers
135 views

Maximizing the norm of a sum of Hermitian matrices

2 votes
0 answers
70 views

The probability that the dominant eigenvalue of a random real matrix is real

2 votes
1 answer
151 views

Is there an abstract theory of multi-spectral radii?

1 vote
0 answers
131 views

The security of one-time digital signatures from a solution to a diophantine equations

1 vote
0 answers
134 views

Are these $L_2$-spectral radii approximations strictly increasing whenever $(A_1,\dots,A_r)$ has no non-trivial irreducible subspace?

4 votes
0 answers
142 views

Rowmotion of matroids

2 votes
0 answers
93 views

Fractional reverse direction Cauchy-Schwarz inequality

1 vote
0 answers
100 views

Is the rank preserved when the spectral radius is maximized?

3 votes
2 answers
657 views

An inequality for the spectral radius of block matrices

3 votes
1 answer
158 views

Approximations of the spectral radii of completely positive superoperators

1 vote
0 answers
29 views

Is every nearly rank 1 doubly stochastic superoperator the product of pairwise averagings of unitary channels?

3 votes
1 answer
229 views

Is $\rho(X_1\dots X_r)^{2/r}\leq \frac{d}{r}\cdot\rho(X_1\otimes X_1+\dots+X_r\otimes X_r)$ for $d\times d$-real matries $X_1,\dots,X_r$?

1 vote
1 answer
85 views

Are these $L_2$-spectral radii approximations strictly increasing?

2 votes
1 answer
149 views

Can the supremum of this quotient of spectral radii be reached?

2 votes
1 answer
311 views

When does the Cauchy-Schwarz inequality for spectral radii of tensor products become equality?

2 votes
0 answers
120 views

Heap torsors and dual objects

1 vote
0 answers
61 views

Algebraic sets $A\subseteq F^{n}$ of prime characteristic where $|A\cap L^{n}|=|L|^{n-r}$ for almost all finite subfields $L\subseteq F$

0 votes
1 answer
104 views

Can this fixed point theorem generalize to infinite structures?

2 votes
0 answers
82 views

Minimizing the spectral radius of certain elements of group rings

2 votes
0 answers
103 views

The distribution of eigenvalues of linear combinations of random unitary matrices

2 votes
0 answers
171 views

Is every nearly rank-1 doubly stochastic matrix a product of pairwise averaging matrices?

1 vote
1 answer
179 views

Factorizing the doubly stochastic matrix where all entries are equal such that the factors are all convex combinations of few permutation matrices

2 votes
1 answer
238 views

How quickly can irreducible aperiodic convex combinations of permutation matrices converge to the stationary distribution?

1
2 3 4 5 6